The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 27, 2018
Filed:
Nov. 08, 2013
Phoenix Contact Gmbh & Co. KG, Blomberg, DE;
Rainer Durth, Horn-Bad Meinberg, DE;
Mario Stolzenberg, Detmold, DE;
Abstract
The object of the invention is an ignition circuit for a series connection of at least two spark gaps for limiting overvoltages with medium and high power, particularly overvoltages corresponding to pulse shapes 8/20 μs and 10/350 μs with amplitudes of about 10 kA to about 200 kA (class I arrester). The spark gaps are each equipped with at least one auxiliary electrode. The ignition circuit has a first varistor and a second varistor, with the ignition circuit being particularly suited to limiting overvoltages with medium power, particularly overvoltages corresponding to pulse shape 8/20 μs with amplitudes of about 10 to about 100 kA (class II arrester). The ignition circuit is designed to be connected to the auxiliary electrodes, with the ignition circuit Z having two ignition subcircuits. The first ignition subcircuit TZhas the first varistor VARand is designed to ignite the first spark gap. The second ignition subcircuit has the second varistor and is designed to ignite the second spark gap. Further objects of the invention are an overvoltage protection device with this kind of ignition circuit, as well as the use of a multi-contact varistor for triggering a spark gap.